| Crewmember | Flight Lieutenant W F W Porteous |
|---|---|
| Rank | Flight Lieutenant |
| Service number | unknown |
| Awards | DFC, DFM |
| Date as recorded | 19-20-05-44 |
| Date range | unknown |
| Squadron / unit | 7 |
| Aircraft | Lancaster III (JB653, code MG-R) |
| RAF station / departure | Oakington |
| Time | 22:23 |
| Location / duty / target | le Mans |
| Incident | Crashed Target area |
| Fate | Killed |
| Buried or commemorated | Le Mans west cem |
| Command | Bomber Command |
